Steplead proposal of 1 tph dairy waste water purification system-cata

PROPOSAL STEPLEAD PAC-TEK
LEAD YOUR BUSINESS TO MORE SUCCESSUSS
Prepared For :
Customer
Xxxx company
A: address
P: phone number
E: email address
Project NO.:
SL18290725-WASTEWATER-1PH
Proposal Issued :
29.01.2019
Proposal Valid to :
28.02.2019
Proposal
PAC-TEK
Address
Shenhua Industry
Zone, Shang Mei Lin,
Futian District,
Shenzhen, China.
Phone
P : +86 755 83143479
F : +86 755 29210591
M : +86 13670181318
Email
johnlauvip@gmail.com
steplead@steplead.com
www.steplead.com

About Us
The great
business
Comes from
professional
service.
A to Z turnkey plant provider
Fully automatic or economic
solution optional
22+ years of global market
experience
OEM / ODM service available
Supplied to European market
since 2002
Various filling solutions for
water, juice, carbonated drink,
beer, oil, chemical and others
QUALIFICATION
With over 700 independent R & D
designs, Steplead designs,
manufactures, services and
supports both regular and tailored
filling and packaging turnkey
solutions to help our customers to
approach their different
production purposes:
l 3~5 gallon water filler
l Drink bottled water filler
l Fruit juice & hot drink filler
l Carbonated drink filler
l POP can bottle filer
l 3L~10L bottle filler
l Viscosity liquid filler
l Glass bottle filling line
l Alcohol drink filler
l Water treatment system
l Labeling machines
l Blow molding machines,
injection molding machines
l Packaging machines
WHAT WE DO
Steplead, ISO 9001:2000 / CE
certified enterprise, over 50
million USD fixed assets, 11
sister companies and more than
70,000 square meters for
producing different product
ranges. manufacturing facility
for blowing machine, water
treatment, water filter
More than 21 years engineering
experience to assure each
machine to be durable, easy to
operate and maintain.
All components are from world
famous suppliers only, SIEMENS,
FESTO, GRUNDFOS, OMRON,
SCHNEIDER, and MITSUBISHI
etc.
Exporting more than 30
countries and regions
throughout the world.

We, Steplead Pac-Tek Machinery Co.,Ltd. are one of the leading companies in designing and
manufacturing bottle filler and packaging equipment in mainland China. We also manufacture
blow molding machine, water filter, labeling machine, injection molding machine, water dispensers
(water coolers), ice maker and sparklers making machines.
We provide one-stop technical service, including water plant layout design, installation, debugging,
commissioning and maintenance. We can provide the technical training for clients. When the
equipment gets something wrong, our technicians will provide solutions within several hours.
Besides, if necessary, we can dispatch the technician to solve the problems on spot.

Steplead, is teamed by professionals with many years of technical and field experience. From
design, production, marketing to after-service.
Steplead works under the principle of innovation and quality-first policy to enhance customer's
satisfaction continuously. All components are from international and domestic famous suppliers
only, such as SIEMENS, FESTO, GRUNDFOS, OMRON, SCHNEIDER and MITSUBISHI etc.
In addition, we adopt the Italy and Germanic technique. Before shipment delivery, we run all
complete sets for at least 70 hours continuously for further inspection. Therefore, our equipment's
lifetime reaches about 10 years under normal operation and maintenance.
Steplead's R&D team is strong, dedicated and well-seasoned - most of them have been working in
this field for over 22 years. Our engineers pay close attention to detail in the innovation and
production of our products. Our professionalism and high quality products earn a high degree of
respect overseas and domestically. Now our products have been exported to more than 30
countries and regions.

Our goal is to bring our products to people all around the world, and to become a first-class OEM
and ODM supplier in the world. No matter you a yearly professional or a beginner in the field,
Steplead will be always able to provide you right machine models for your special needs.
If not Steplead, then Who? If not Now, then When?

Components
l Stainless Steel 316L / 304: China
l Pneumatic Component: Germany, Japan, Taiwan
FESTO, SMC, AIRTAC
l Motor and Speed Reducer
SHANGHAI LI CHAO
l Stainless Steel Material Pump: Denmark, CHINA
GRUNDFOS, NANFANG
l Carbon Steel: China
BAO STEEL
l Electrical Component: Japan, Germany, France, USA
OMRON, SIEMENS, SCHNEIDER, TURCK,

Flow Chart
Sludge reflux
Grease pool
Waste water grille
pool
Regulation pool
Air floating tank
Hydrolyzed
acidification tank
Contact oxidation
tank
Sludge
concentration tank
Aeration
PAC
PAM
Contact oxidation
tank
Secondary
sedimentation tank
Clean water
disinfection tank
Contact oxidation
tank
Secondary
sedimentation tank
Clean water
disinfection tank
Aeration
Mixed liquid reflux

Structure
11
Sludge reflux
Sludge
concentr
ation
tank
Sludge clean up
Adding medicine
Control
room
Disinfection
room
Water pump
disinfecti
on tankoxygen-deficient
tank
Aerobic
tank
sediment
ation
tank
Regulation tank
grille
Waste water
input Clean water
output
Sampling

Water Quality Analysis &
Process Selection
Dairy processing wastewater mainly comes from washing water of various equipment, ground
washing water and wastewater for producing various dairy products. Dairy wastewater is a
medium-high concentration organic wastewater with good biodegradability and is suitable for
biochemical treatment. However, wastewater contains a large amount of SS, oil and other
substances, and contains high concentrations of nitrogen nutrients. Fully in the middle. The water
quality characteristics of dairy wastewater are as follows:
1. The concentration of organic matter in water is high and the pH value fluctuates greatly. The
COD concentration of dairy wastewater is generally between 2000mg/L and 6000mg/L. Due to the
imbalance of discharge time, the COD concentration and pH value of each period change greatly.
Considering the large fluctuation of water quality and quantity, it is advisable to set a regulating
tank with a longer residence time before the pretreatment in the specific design to adjust the
various types of wastewater discharged in different time periods.
2. The biodegradability of water is good. The BOD/COD ratio of dairy wastewater is generally
greater than 0.5, which is an organic wastewater that is highly biodegradable, and the wastewater
contains substantially no substances that are highly toxic to microorganisms, and is suitable for
biological treatment. The biodegradability of dairy wastewater is suitable for biological treatment.
However, in the process operation, if improper care is taken, there is a possibility of sludge
expansion. Therefore, in the process selection, attention should be paid to those organisms that
are not prone to sludge bulking. Processing processes such as SBR, AO, contact oxidation, etc.
3. The wastewater produced contains a large amount of SS and oily substances. Dairy wastewater

generally contains many fine particles, such as milk fat, lactose, milk protein, etc., and contains a
lot of oil. These oils degrade very slowly and adhere to a certain waste (such as waste in cheese
production and cheese), which not only affects the normal operation of the pump, but may also
cause sludge expansion of the aerobic system. Moreover, the oil accumulates on the surface of the
aerobic tank for a long time, affecting the flocculation and sedimentation performance of the
sludge and hindering the gas transmission. Therefore, in the treatment of dairy wastewater, it is
necessary to pay full attention to the importance of pretreatment and degreasing.
4. The content of organic nitrogen in wastewater is high. Although the content of NH3-N in dairy
wastewater is not high, it contains a large amount of organic nitrogen species, such as milk protein,
which undergo ammoniation under certain conditions, thereby increasing the concentration of
NH3-N in the wastewater. Generally, in pretreatment such as acidification and anaerobic process,
ammoniation occurs, and a large amount of organic nitrogen is converted into ammonia nitrogen,
so that the concentration of ammonia nitrogen entering the subsequent aerobic treatment is
generally high, and since the effluent requirement reaches the first-level discharge standard,
Ammonia nitrogen concentration has strict requirements, so in the process selection, it is better to
choose a process with better denitrification effect.
Based on the influent water quality, effluent requirements and the above characteristics of the
project, the main treatment process of air flotation + hydrolysis acidification + contact oxidation is
adopted.
Process Introduction
Before the sewage enters the biochemical treatment, the pretreatment should be carried out first.
First, the large oil slick is removed through the grease trap, and then the large floating matter and

the suspended matter are filtered by the gutter channel, and then the regulating pool is used to
mix the water and the water. Intermittent aeration mixing of the perforated pipe in the adjustment
tank to achieve uniform water quality and prevent solid particles from precipitating. The
wastewater in the regulating tank is lifted by the submersible sewage pump and enters the air
floating pool. The SS and colloidal substances in the industrial wastewater of the air flotation and
the most of the oil are taken into the water treatment agent. The surface forms a floc which is
removed by a scraper to effectively separate the solid liquid. Then, the air floating water flows into
the hydrolysis acidification tank for acidification treatment, and the hardly decomposable
macromolecule is hydrolyzed into a small molecule easily degradable substance, thereby reducing
the pressure of the processing equipment in the subsequent step and improving the processing
capability. The natural flow of the hydrolyzed acidified effluent enters the contact oxidation pond.
The biological contact oxidation method is a biofilm process between the activated sludge process
and the biological filter, which is characterized in that a filler is arranged in the pool, and the
bottom aeration of the pool is The sewage is oxygenated or agitated, so that the sewage in the
pool is in a flowing state, so as to ensure sufficient contact between the sewage and the filler in
the sewage, and to avoid the defects of uneven contact between the sewage and the filler in the
biological contact oxidation pond. The biofilm in the biological contact oxidation pond consists of
bacterial micelles, filamentous fungi, fungi, protozoa and metazoans. In the activated sludge
process, filamentous bacteria are often the factors that affect the normal biological purification; in
the biological contact oxidation pond, the filamentous bacteria have a three-dimensional structure
between the filler voids, which greatly increases the contact surface of the biological phase and
the wastewater. At the same time, filamentous bacteria have strong oxidizing ability to most
organic substances, and have great adaptability to changes in water quality load, so it is a powerful
factor for improving purification ability.

Design range
According to the design water quantity and the influent and effluent water quality, the design
scheme of the sewage treatment station is determined, including the sewage treatment process,
the building shape and equipment selection design, and electrical control.
Features
u Due to the large specific surface area of the filler, the oxygenation conditions in the tank are
good, and the amount of biosolids per unit volume in the tank is high. Therefore, the biological
contact oxidation tank has a high volumetric load;
u Due to the large amount of biosolids in the biological contact oxidation pond and the
complete mixing of the water flow, it has strong adaptability to sudden changes in water
quality and quantity;
u The amount of excess sludge is small, there is no sludge expansion problem, and the operation
and management are simple.
u The effluent from the contact oxidation pond enters the secondary settling tank to separate
the muddy water. After separation, the effluent is discharged into the disinfection tank for
disinfection, and is stored in the clear water tank for disinfection.
u The slag and sludge of the air flotation and the secondary settling tank are discharged into the
sludge concentration tank, and the supernatant liquid is returned to the regulating tank for
further processing, and the precipitated sludge is periodically transported.

Basic Data of Project
PROJECT NAME
1T/Hour dairy waste water purification system
CUSTOMER DETAILS
Customer's company name
Address
Key contact
Contact no.
Email
PRODUCTS AND SITE/UTILITY REQUIREMENTS
Filtration liquid Dairy waste water
Max outside temperature 24o
C
Min temperature 2o
C
Factory area TBD
INPUT WATER QUALITY
CODcr 8000
BOD5 5000
pH 4-5
TSs 4000
OUTPUT WATER QUALITY
CODCr 500

BOD5 125
SS 600
PRODUCTION CAPACITY
1 ton per hour/ 24 tons per day
ELECTRICAL SPECIFICATIONS
Voltage AC (V) 380V
Wires: 3 wires (live wire x 3)
Frequency (Hz) 50Hz
Phases 3 phases
POWER RATINGS
1 Ton/Hour dairy waste water Treatment system TBD
COMPRESSED AIR SUPPLY
TBD
PACKING SIZES
1 Ton/Hour dairy waste water Treatment system TBD
12

Equipment Description

GREASE POOL
The grease trap is a treatment structure that uses the difference in specific gravity between oil and

water to separate and remove the large suspended oil in the sewage. The structure of the grease
trap adopts advection type. The oily wastewater enters the grease trap which is rectangular in the
plane through the water distribution tank, and flows slowly in the horizontal direction. On the
floating surface of the oil in the flow, it is pushed by the oil collecting pipe or the oil scraper placed
on the pool surface. Flow into the dewatering tank into the collecting pipe. The heavy oil and other
impurities precipitated in the grease trap accumulate in the sludge tank at the bottom of the tank
and enter the sludge pipe through the drain pipe. The waste water treated by the oil separation
overflows into the drain discharge tank for subsequent treatment to remove emulsified oil and
other pollutants.
WASTE WATER GRILLE POOL
DESIGN PRINCIPLE
Size Channel length x width x depth = 1.0 x 0.6 x 0.8m
structure Reinforced concrete (built by customer)

A set of artificial grille is provided for removing large suspended solids in the sewage, which can
protect the water pump and the subsequent processing unit.
Price included equipment:
Artificial grille: 1 set x gap 10mm
REGULATION POOL
DESIGN PRINCIPLE
Size Channel length x width x depth = 1.0 x 0.5 x 1.0m

In order to stabilize the biochemical treatment, we have set up a water quality adjustment tank for
the characteristics of domestic sewage discharged from the gap. The adjustment time of the
adjustment tank is 3 hours, and the adjustment tank adopts blast aeration, that is, the water
quantity is adjusted and pre-aeration is performed. A liquid level control system is provided in the
pool.
A structure used to regulate the flow of incoming and outgoing water. It mainly regulates the water
quantity and water quality, as well as the regulation of the pH value and water temperature of the
sewage, and can also be used as accident drainage. For some reactions, such as anaerobic reaction,
it is sensitive to water quality, water volume and impact load. Therefore, for the proper size
adjustment tank of industrial wastewater, the adjustment of water quality and water quantity is
the guarantee for stable operation of anaerobic reaction. The role of the conditioning tank is to
homogenize and average, and generally can also consider the functions of precipitation, mixing,

dosing, neutralization and pre-acidification.
Lifting pump: 2 sets, 1 with 1 standby, Q=1m3/h, H=15m, N=0.37kw
Pre-aeration equipment: 1 set of perforated tube aerator
Level float switch: 1 pc
AIR FLOATING TANK
Principle of Air Flotation Process The air floatation process is an efficient and fast method for
separating solid particles from water and wastewater. The working principle is that part of the
DESIGN PRINCIPLE
Design size Channel length x width x depth = 3.0 x 2.0 x 2.5m
Effective water depth 2.0m
Quantity 1 set

treated wastewater is circulated into the dissolved gas tank. Under the pressurized air state, the air
is supersaturated and dissolved, and then mixed with the raw water to which the flocculating
agent is added at the inlet of the floating floating pool, and the supersaturation is caused by the
pressure reduction. The air is released, forming tiny bubbles that quickly adhere to the suspended
matter and lift it to the surface of the floatation tank. As a result, a sludge floating layer which is
easily removed is formed, and a heavier solid matter is deposited at the bottom of the tank and is
also removed.
The air floating pool generally consists of a flocculation chamber, a bubble contact chamber and a
separation chamber. It has the functions of forming and growing the flocculation in water, adhering
and trapping microbubbles to the floc, and collecting the air floc and water. In addition to the air
floatation tank itself, it is necessary to have other ancillary facilities combined with it, such as a
pressure drop air floatation tank, which is equipped with a pressure tank and a dissolved gas
release device.
The air floatation tank has been widely used in water purification treatment with low turbidity,
high algae, low temperature, high chroma and low dissolved oxygen. It is also widely used in
wastewater treatment in various industries such as refining, paper making, printing and dyeing.
DESIGN PRINCIPLE
Design size Channel length x width x depth = 0.5mx 2.2 x 2.5m
Quantity 1 set
structure Carbon steel anticorrosion
Air floating tank: 1 set 0.5mx 2.2 x 2.5m
PAC, PAM dosing equipment (placed between equipment):
u 1 set each. Each set contains 100L of PE barrel,

u 1 metering pump GM0010, pressure 12bar, power 0.25kw, 1 set;
u 1 set of mixer, power 0.11kw.
Pressurized return pump: Q=0.6m3/h, H=42m, N=0.37kw, 1 set
Air compressor: 1.1kw, 1 set
Scraper: span 0.5m, 0.37kw
Dissolved gas tank: 0.2m3
HYDROLYZED ACIDIFICATION TANK
The basic principle of the hydrolysis-acidification process
The hydrolysis-acidification process can be derived from the analysis of the anaerobic
decomposition process of organic matter. The anaerobic decomposition of organic matter can be
generally decomposed into three stages. The first stage is the hydrolysis of macromolecular
substances or insoluble substances into low-molecular-soluble organic substances by hydrolase

enzymes produced by facultative bacteria. This stage mainly promotes the dissolution of organic
matter. Sex. The second stage is the acid production and dehydrogenation stages. It oxidizes
soluble small molecules formed by hydrolysis from acid-producing bacteria into low-molecular
organic acids, and synthesizes new cellular substances. The third stage is the further oxidation of
the second stage product to methane, carbon dioxide, etc. by methanogenic bacteria and the
synthesis of new cellular material. The refractory organic compounds are usually organic
compounds of some macromolecules, cellulose, etc. The degradation of such pollutants first
undergoes a hydrolysis process, while the aerobic microorganisms have a weak hydrolysis ability,
resulting in slow degradation of organic matter. [1] The anaerobic biological treatment utilizes the
hydrolysis-acidification stage to degrade some refractory substances. As long as the
hydrolysis-acidified microbial flora is formed, some refractory substances can be degraded. In 1967,
it was discovered that chlorinated hydrocarbons can be dechlorinated under anaerobic conditions
to decompose into intermediates that are more readily biodegradable. [2] In the hydrolysis and
acidification stage, the main microorganisms are hydrolyzed bacteria and acid-producing bacteria,
all of which are facultative bacteria, which use hydrolyzed bacteria and acid-producing bacteria to
degrade macromolecules and refractory organic matter into small molecular organic substances
and improve wastewater. Biodegradability creates favorable conditions for subsequent processing.
DESIGN PRINCIPLE
Design size Length x width x depth = 1.5m x 2.2 x 2.5m
Hydraulic retention time 6.6h
Quantity 1 seat
Structure Carbon steel anticorrosion
Water distribution method
The perforated pipe water distributor (branched water
distribution method) is adopted, and the water outlet pipe
outlet is 200 mm away from the bottom of the pool, and is
located at the center of the multi-service area, and the
outlet pipe diameter is 15 mm (generally 15-25 mm).
Water collection Rectangular cofferdam with steel plate

Drainage system design
The static pressure sludge discharging device is used to
discharge mud at a plurality of points along the longitudinal
direction of the rectangular pool, and the sludge
discharging point is arranged in the upper middle part of
the sludge area. Use regular mud discharge, 1-2 times a day
The hydrolysis-acidification tank: 1 set 1.5m x 2.2 x 2.5m
The water distribution device,
The mud discharging device
The effluent collecting rectangular raft
CONTACT OXIDATION TANK
The biological contact oxidation method is a high-efficiency water treatment process for purifying
organic wastewater by using a biofilm attached to a carrier (commonly known as a filler). It is a
biofilm method with the characteristics of activated sludge method, and has the advantages of
activated sludge method and biofilm method. Under the biochemical conditions, no matter
whether it is applied to industrial wastewater or aquaculture sewage or domestic sewage

treatment, good economic benefits have been achieved. The process is widely used in sewage
treatment systems of various industries due to its high efficiency, energy saving, small footprint,
impact load resistance and convenient operation and management.
Biological treatment is the link after physicochemical treatment, and it is also an important link in
the whole sewage treatment cycle. Here, harmful substances such as ammonia nitrogen, nitrous
acid, nitrate and hydrogen sulfide will be removed, and further treatment of water quality in the
future process will be carried out. Play a key role.
DESIGN PRINCIPLE
Size
The first segment L x B = 2.8 x 2.2m
The second segment L x B = 2.7 x 2.2m
Height 2.5m
Quantity 2 grid
Residence time 24 hours
Contact oxidation tank: 1set
Filling material: Φ200, 16.5m3
Aeration pipeline: 1 set
Aerator: QMZM-25, service area 0.4-0.8m2/h., oxygen utilization rate 22-40%, oxygenation
capacity 0.21-0.4kgO2/h, 33
Mixed liquid reflux pump: Q=3m3/h, H=10m, N=0.37kw, 1 set

SECONDARY SEDIMENTATION TANK
The secondary sedimentation tank is an important part of the activated sludge system. Its function
is mainly to separate the sludge and clarify, concentrate and return the activated sludge. The
working effect can directly affect the effluent quality and return sludge concentration of the
activated sludge system. Large and medium-sized sewage treatment plants mostly use circular
suction flow sedimentation tanks with mechanical suction, medium-sized also adopt multi-draft
advection sedimentation tanks, and small ones adopt vertical flow type.
In principle, the advection sedimentation tank, the radial flow sedimentation tank and the vertical
flow sedimentation tank used in the primary sedimentation tank can be used as a secondary
sedimentation tank. Large and medium-sized sewage treatment plants mostly use circular suction
flow sedimentation tanks with mechanical suction, medium-sized also adopt multi-draft advection
sedimentation tanks, and small ones adopt vertical flow type. In addition to the separation of
muddy water, sludge is also concentrated, and sludge is temporarily stored due to changes in water
quantity and water quality. Since the secondary settling tank is subjected to sludge concentration,
the required pool area is larger than the pool area required for only the separation of the mud

water.
DESIGN PRINCIPLE
Design size Length x width x depth = 1.4m x 1.4m x 2.5m
Secondary sedimentation tank: 1set 1.4m x 1.4m x 2.5m
Main equipment: 1 sludge pump, Q=1m3/h, H=10m, N=0.37kw
Diversion tube: one set, D120x 1700mm
Overflow cofferdam: 1400 x 200 x 200mm
DISINFECTION TANK

Sewage disinfection is a water treatment process that kills harmful pathogenic microorganisms in
domestic sewage and certain industrial wastewater treatment systems. Domestic sewage and
some industrial wastewaters contain not only a large number of bacteria, but also viruses, amoeba
cysts and the like. They cannot be extinct through general wastewater treatment processes. The
ordinary biofilter in the urban sewage treatment system can only remove 80-90% of E. coli, and the
activated sludge method can only remove 90-95%. In order to prevent the spread of disease,
sewage (waste water) is generally treated by mechanical and biochemical secondary treatment,
and sometimes it needs to be disinfected. Common disinfection methods are: chlorination, ozone
disinfection, sodium hypochlorite method, chlorine dioxide method. Disinfection, etc.
DESIGN PRINCIPLE
Design size Length x width x depth = 0.8x1.4x2.5m
Disinfection tank: 1 set 0.8x1.4x2.5m
EQUIPMENT ROOM

Room for equipment and device
DESIGN PRINCIPLE
Design size Length x width x depth =2.0x2.2x2.2m
Equipment room: 1 set 2.0x2.2x2.2m
Blower: 2 sets, 1 for 1 standby, flow 1.03m3/min, boost 24.5kpa, power 0.75kw.
PAC, PAM dosing system, see air floatation equipment
Disinfection dosing system:
u 100L PE barrels, 1 pc;
u metering pump: GM0002, pressure 12bar, power 0.25kw, 1 set.
Control cabinet: PLC, 1 set
SLUDGE POOL

The primary sludge and excess sludge produced by the sewage treatment system are discharged
into the mud collection pool.
DESIGN PRINCIPLE
Design size Length x width x depth =1.5x1.5x2.5m
Structure Reinforced concrete (built by customer)
Sludge pump: Q=6.0m3/h, H=10m, N=0.55kW, 1 set

List of Equipment
No. Item Specification Structure material
Quantity
(Set)
1 Grease trap 1.0x0.6x0.8m Reinforced concrete 1
2 Grille 1.0x0.5x1.0m Reinforced concrete 1
3 Regulation pool 3.0x2.0x2.5m Reinforced concrete 1
4 Air floating pool 0.5x2.2x2.5m
Carbon steel
anti-corrosion 6mm
1
5 Hydrolyzed acidification tank 1.5x2.2x2.5m
Carbon steel
anti-corrosion 6mm
1
6 Contact oxidation pond
Section 1: 2.8x2.2x2.5m
Carbon steel
anti-corrosion 6mm
1
Section 2: 2.7x2.2x2.5m
Carbon steel
anti-corrosion 6mm
1
7 Second settling pool 1.4x1.4x2.5m
Carbon steel
anti-corrosion 6mm
1
8 Clean water tank 0.8x1.4x2.5m
Carbon steel
anti-corrosion 6mm
1
9 equipment room 2.0x2.2x2.5m
Carbon steel
anti-corrosion 6mm
1
10 Sludge tank 1.5x1.5x2.5m Reinforced concrete 1
(Above data could be changed basing on actual production demand or technology
improvement)
List of Specs
Name The Main Parameters Quantity Remark
Grille Mechanical grill Gap 10mm 1 set Stainless Steel
Regulation
pool
Pre-aeration pipeline 1 set
Float level switch 0-6m 1
Regulating tank sewage
pump
Q=1m3/h, H=15m, N=0.37kw 2 sets CNP
Air floating
pool Dosing system
PE barrel 100L; metering pump
GM0010, pressure 12bar, power
0.25kw; mixer power 0.11kw
2 sets

Pressurized return pump Q=0.6m3/h, H=42m, N=0.37kw 1 set CNP
Air compressor 1.1kw 1 set
Scraper Span 0.5m 1 set
Gas tank 0.2m3 1
Hydrolyzed
acidification
tank
Drain pipe 1 set
Water distributor Matching 1 set
Sink Matching 1 set
Contact
oxidation
pond
filler Φ200 16.5m3
Aeration pipeline 1 set
Aerator
QMZM-25, service area 0.4-0.8m2/h.,
oxygen utilization rate 22-40%,
oxygenation capacity 0.21-0.4kgO2/h
33
Mixed liquid reflux pump Q=3m3/h, H=15m, N=0.37kw 1 set CNP
equipment
room
Blower
Flow rate 1.03m3/min, boost
24.5kpa, power 0.75kw
2 sets New Huadong
PAC, PAM dosing system Set
Disinfection dosing system
PE barrel 100L, 1; metering pump
GM0002, pressure 12bar, power
0.25kw, 1 set
Control System PLC 1 set
Sludge tank
Sludge pump Q=6.0m3/h, H=10m, N=0.55kW 1 set CNP
other
Pipes, valves, fittings, etc. Matching
(Above data could be changed basing on actual production demand or technology
improvement)

Bank Account
USD ACCOUNT
Bank BENEFICIARY'S BANK:
ADDRESS:
SWIFT CODE:
TELEX:
ACCOUNT NUMBER:
BENEFICIARY NAME:
Signature
Steplead Pac-Tek Machinery Co.,Ltd.
Steplead International Co.,Ltd.
Address: Shenhua Industry Zone, Shang Mei Lin,
Futian District, Shenzhen, China .
Tel: (+86-755) 83143479
Fax: (+86-755) 29210591
For Steplead International Co.,Ltd.
---------------------------------------------------
Mr. John Lau.
Sales Manager

Equipment Offer
Item no. Description Quantity FOB China Unit Price
1 1 Ton/Hour dairy waste water Treatment 1 set
Terms & Conditions
1) Validity of quotation: Since Jan 25th, 2019, available for 30 days for machines
2) Above offer basing on turnkey package condition.
3) Quotation terms: The above quotation is basing on FOB China terms.
4) Payment terms: TT 30% as down payment, and balance TT before shipment.
5) Balance should be paid within 30 days after production finished.
6) Production time:
30 working days on receipt of down payment and samples.
7) Above quotation basing on 380V/50Hz, price may be adjusted slightly for special power
voltage
8) All components with CE, UL, CSA, TUV certificates.
9) All machines with CE, ISO certificates.
10) Balance should be paid within 30 days since the goods ready, or we reserve the rights to resell
the goods to other customers.

Warranty and After Service
1) 10 years service life;
2) 2 years quality warranty.
3) We can train client's engineers in our factory free of charge. It means clients can sent their
engineers to our factory to study and have training course, we have rich experiences for the
training, it is a good way to make sure that client can operate and maintain our machines
successfully and for long term normal use.
4) A detail manual books will be provided for our machines, also we will make one Video CD to
show how to install and maintain the machines, the CD is the movie for the machines, it will
be the great references for client learning to maintain the machines in future operation.
5) As per client request, we can send our engineers to client's factory to install the machines and
train client's engineers, it is the best way to help to operate and maintain the machines. And
all traveling cost during for sending our engineers, including return air tickets, accommodation
etc and training fee (US$100.00 per person per day) in destination country should be on
client's account.
6) Spare parts: Free spare parts will be provided.
7) Online technology consultation.

GROW YOUR
BUSINESS WITH US

THANK YOU FOR
YOUR BUSINESS
ADDRESS
Shenhua Industry
Zone, Shang Mei Lin,
Futian District,
Shenzhen, China.
.
PHONE
P : +86 755 83143479
F : +86 755 29210591
M : +86 13670181318
EMAIL
johnlauvip@gmail.com
steplead@steplead.com
www.steplead.com
PAC-TEK

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