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Process for processing PVC waste water using automatic brush type filter and ultrafilter

A technology of polyvinyl chloride and automatic brushing, which is applied in the direction of fixed filter elements, ultrafiltration, filtration separation, etc., and can solve problems such as ultrafiltration clogging

Inactive Publication Date: 2009-03-11
上海市工业用水技术中心有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the clogging problem of ultrafiltration, the inventors consulted and analyzed the prior art, and did a lot of research and experiment work, and finally found an ideal technical solution through comparison

Method used

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  • Process for processing PVC waste water using automatic brush type filter and ultrafilter

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Embodiment 1

[0027] The polyvinyl chloride wastewater including domestic wastewater is adjusted and neutralized, oxidized and precipitated, and after biochemical treatment, 22g of ferric chloride flocculant is added, pumped into the filter cartridge of the automatic brush filter [1], and passed through the stainless steel mesh [1]. 6] Filtration to remove solid particles with a particle size greater than 0.13mm, and enter the hollow fiber membrane [5] tube of the ultrafilter [2] through the valve [7a], and the filtered water from the side of the hollow fiber membrane tube is collected in the outlet pipe, Through the valve [7d] into the water storage tank [3], the water quality after ultrafiltration is pH 7.9, turbidity 0mg / l, total dissolved solids 5200mg / l, conductivity 4500μS, chemical oxygen consumption 75mg / lO 2 , Ultra-filtered water is used for concentration and desalination, and finally reaches zero discharge. In order to ensure that the ultrafilter [2] can operate for long-term tre...

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Abstract

The process that automatic bush-typed filters and ultrafilters treat polyvinyl chloride wastewater is to add 5.5ppm of ferric chloride flocculant in the wastewater, then the wastewater is sent to the filter cartridge of the automatic bush-typed filter (1) by a pump, filtered by a stainless steel net (6) for removing the solid particles with the particle size of more than 0.13mm, enters the hollow fiber membrane (5) tube of the ultrafilter (2) by a valve (7a), the filtered water coming out from the side of the hollow fiber membrane tube is gathered in the outlet pipe and enters a water storage tank (3) by the valve (7a). The water quality after ultrafiltration is: pH is 7.4-8.4, turbidity is 0mg / L, the total quantity of dissolved solid is 4900-5500mg / L, electrical conductivity is 3800-5600mus / cm, chemical oxygen consumption is 66-91mg / L of O2. After 15-20 minutes of operation, one direct-reverse washing and one reverse washing are operated, and the washing time is half a minute. In this way, a blockage phenomenon cannot appear after one month of operation, and the water quality produced changes little.

Description

1. Technical field [0001] The invention relates to an ultrafiltration treatment process of polyvinyl chloride waste water, more precisely relates to a process for treating polyvinyl chloride waste water with an automatic brush filter and an ultra filter. 2. Background technology [0002] my country is a country with a serious shortage of water resources, especially in the northwest region. The amount of sewage discharged by polyvinyl chloride production plants is large, and it is also very harmful to the environment. For this reason, it has become an urgent task to solve the pollution problem of polyvinyl chloride wastewater. All major manufacturers recycle waste water and aim at zero discharge. [0003] There are many methods for PVC wastewater treatment, such as physicochemical method, contact oxidation-ozone method, coagulation method, activated sludge method, ultrafiltration method, coagulation ozone method, etc. From the perspective of effect, it is ideal to adopt bio...

Claims

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Application Information

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IPC IPC(8): B01D61/14C02F1/44B01D46/02B01D29/35B01D29/62
Inventor 柳铭三肖关忠
Owner 上海市工业用水技术中心有限公司
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