Automatic Backwash Bypass Sand Filter in Cooling Tower Circulating Industrial Water (YLD)

• Type: Sand Filter
• Usage: Environmental Protection, Chemical Industry
• Motive Force: Electric power
• Style: Vertical
• Performance: Efficient Filtration
• Certification: CE, SGS
• Model NO.: YLD
• Item: Automatic Backwash Bypass Sand Filter
• Material: Stainless Steel/Carbon Steel
• Certificate: Ce, ISO
• Form: by-Pass
• Flow Rate: 20-35m/H
• Average Remove Rate: 92%--96%
• Inlet Pressure: 0.15-0.4 MPa
• Filter Media: Quartz Sand
• Backwash: Automatic
• Thickness: 4mm
• Transport Package: Plywood Case Into Container
• Specification: CE, SGS
• Trademark: YLD
• Origin: Jiangyin, Jiangsu
• HS Code: 842121999
• Production Capacity: 500 Sets/Year

Product Description

Automatic Backwash by Pass Sand Filter in Cooling Tower Circulating Industrial Water

By-pass filter for chilled water as a by-pass filtering equipment of closed industrial circulating water is used to filter the circulating chilled water and its control modes consist of manual backwash and automatic backwash. The system is generally backwashed once every three to seven days in the circulating process, effectively improving the quality of chilled water and ensuring excellent and stable water quality after intervention to long-term running. The device has small water consumption and is widely used in the cleaning of all types of industrial and commercial chilled water circulation system as well as refrigerant water and heat medium water systems of central air conditioning, improving the stability of equipment operation. Users may weld and conned in parallel the by-pass filters in main return pipes depending on the conditions of circulation system and the pipe diameter should be determined based on the retaining water yield of parallel circulating water. The sewage water is then discharged into the sewerage network.

Working principle
For the by-pass filtration, the filter is installed in the main circulating pipeline to filter all the circulating water, but a part of the circulating water LED from the main circulating pipeline is filtered, which is a repeated circulating interception step by step to filter the impurities within the system and finally remove the impurities by the necessary backwash out of the system. Installing a by-pass filter in the circulating water system can prevent the terminal pipe of device from sludge blocking and remove the impurities in the system with chemical dosing.
By-pass filtration is used to reduce the turbidity of the water circulation system, exactly, to reduce slime and prevent its deposition in the heat exchanger, so that the effect of agent will be better.

Generally speaking, if your filter is a quartz sand filter, it usually has two main functions:
1. To reduce suspended solids (turbidity). Otherwise, as the system is running, suspended solids increases, which will exacerbate the deposition and other problems.
2. Degreasing. Especially the oily turbid circulation, such as steel rolling and continuous casting, has high oil content and is easy for breeding microorganism and blocking the nozzles.

Technical description of by-pass filter for the industrial circulating water
Flow filter flow is designed according to 5% to 10% of the total circulation volume (the by-pass filter flow of the cooling water is designed by 10 % of the circulation volume and the by-pass filter flow of chilled water is designed by 5% of the circulation volume) and the filtration rate is designed by 20 - 3Smih according to water quality of the system. Specific to corrosive suspended solids of the circulating water system as well as the control, our technical support team has designed a variety of manual/automatic by-pass filtrating equipment in line with customer demand.

The characteristics of the filtration system
1. Manual or automatic control is available;
2. Water distributor is simple, uniform and reliable;
3. Finished water collector has high strength and long service life;
4. Easy to install. Only connect the inlet and outlet to the waste pipe when installing;
5. Less water consumption in backwash: A homogeneous filter is used, so that backwash cycle is extended and the total backwash water volume is greatly reduced;
6. High backwash efficiency: An advanced water collector is used, ensuring efficient backwash effect.
Working Shop:





The size of each filter, the number of filters required, and the type of filter media used depend upon:

1. What is the capacity(gpm or m3/h)do you require?

2. What is the raw water?

3. What is the power supply in your country?

---Is it 220-240V,50/60Hz,1 phase or other standard?

4. What will the be treated warter used for?

model	Filter diameter	Height	inlet-outlet	Filtration area	capacity
	mm	mm	mm	m²	m³/hour
YL-SF-500	500	816	40	0.2	6~10
YL-SF-600	600	874	40	0.28	8~14
YL-SF-700	700	900	40	0.38	12~19
YL-SF-800	800	960	DN50	0.50	15-25
YL-SF-1000	1000	1200	DN50	0.79	23-39
YL-SF-1200	1200	1400	DN80	1.13	33-55
YL-SF-1400	1400	1600	DN100	1.54	45-75
YL-SF-1600	1600	1800	DN100	2.01	60-100
YL-SF-1800	1800	1950	DN150	2.54	75-125
YL-SF-2000	2000	2150	DN150	3.14	95-155
YL-SF-2200	2200	2250	DN150	3.80	115-190
YL-SF-2400	2400	2100	DN150	4.52	130-210
YL-SF-2600	2600	2400	DN150	5.30	145-225
YL-SF-2800	2800	2500	DN200	6.15	155-240
YL-SF-3000	3000	2600	DN200	7.00	170-255
YL-SF-3200	3200	2800	DN250	8.15	270-320

Our Service:

We provide 24 hours online customer service.

Any inquiry about water treatment system, please feel free to contact me for further details!

Contact information:
Mobile phone: [phone]
Alibaba website: http://yldwater.en.made-in-china.com
Official website: yldwater.en.made-in-china.com
Guarantee period:1 year
After-sale service:800-827-87-226