CN102527121A

CN102527121A - Reverse osmosis preprocessed automatic backwashing filter

Info

Publication number: CN102527121A
Application number: CN2012100413005A
Authority: CN
Inventors: 胡孟春
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-23
Filing date: 2012-02-23
Publication date: 2012-07-04

Abstract

The invention discloses a reverse osmosis preprocessed automatic backwashing filter. The reverse osmosis preprocessed automatic backwashing filter consists of a filter, a water inlet and discharge pipe and a control system. According to the filter, a specially designed filter element is accommodated in a standard filtering shell, and the filtering precision is 30 mum. Polyvinyl chloride (PVC) pipes and electromagnetic valves form a water inlet loop and a water discharge loop. The control system consists of a timer and a relay, controls an electromagnetic valve and a water pump and performs filtration and backwashing alternately according to set time. An operation system is divided into two types, i.e. a manual operation system and an automatic operation system. After an automatic switch is opened, fully-automatic running is performed according to set time. The reverse osmosis preprocessed automatic backwashing filter is suitable for pre-filtration of drinking water membrane treatment equipment and membrane biological reactor (MBR) sewage treatment equipment. The reverse osmosis preprocessed automatic backwashing filter plays a very important role in preventing membrane blockage and prolonging the service life of a membrane.

Description

The preposition automatic backwashing filter of counter-infiltration

Technical field belongs to water-treatment technology field

The background technology reverse osmosis membrane is widely used in drinking water treatment.The blockage problem of reverse osmosis membrane particularly for the processing of the high algae water in lake, is the 'bottleneck' restrictions that this technology is applied to drinking water treatment, is the problem that should put forth effort to solve.For more effective protection reverse osmosis membrane, increase the service life, the filtration treatment before the strengthening membrane becomes common recognition.General method is to carry out preliminary treatment with micro-filtration, ultrafiltration; Before micro-filtration, hyperfiltration treatment; Security personnel's filter of forming with quartz sand+active carbon carries out preposition filtration treatment; But filtering accuracy does not reach the influent quality requirement of directly advancing micro-filtration, ultrafiltration membrane treatment, and it is serious that counter-infiltration is stopped up, and the regular backwash of quartz sand, to change workload very big.To this problem, the preposition automatic backwashing filter of research and development counter-infiltration.

The preposition automatic backwashing filter structure of summary of the invention counter-infiltration is made up of three parts: filter; The inlet pipe, drain pipe road; Automatic control system.Filter is with the custom-designed filter core standard filter housing of packing into; The filter cartridge construction that is designed is the corrosion resistant plate that aperture 30 μ m stainless steel wire filter clothes is welded in the thick even distribution Φ 1.5mm of 1mm hole; Be rolled into cylindric weld seam, two weldering lid, the lid middle part is Φ 27mm limbers.6 fens pvc pipes of inlet pipe, drain pipe route and 4 often open, 4 normally closed solenoid valves are formed, and the pipeline of normally open solenoid valve control supplies water to filter, and the pipeline of normally closed solenoid valve control supplies recoil water to filter.Pipeline in normally closed solenoid valve control connects a Venturi tube, forms jet and increases recoil pressure, strengthens repercussion effect.Automatic control system is made up of timer and relay, controls 8 magnetic valves and a water pump, by time-interleaved water inlet filtration, the backwash set.Water pump is a self priming pump, two water inlet pipes of water pump water inlet termination, and solenoid control is advanced former water respectively and is advanced to recoil water.

The preposition automatic backwashing filter working procedure of counter-infiltration: switch power supply → startup pump → water inlet pipe aspirates former water through the pump housing → normally open solenoid valve control piper → advancing filter → filtered water advances the film treatment process; The control system closes → normally closed solenoid valve solenoid control pipeline unlatching → recoil water back-flushing filter → recoil water discharge to magnetic valve energising → normally open solenoid valve control piper; Contain solid particle, suspension according to former water, set water inlet with timer and filter and the recoil water discharge time, two processes hocket.

The preposition automatic backwashing filter operation of counter-infiltration divides manually and automatic two kinds.At positive 3 console switch and 1 locking switch installed of casing, 2 console switch are respectively that manual water inlet is filtered and the drainage switch that manually recoils, and 1 console switch is an automatic switch.Locking switch is to prevent maloperation usefulness.After automatic switch was opened, the preposition automatic backwashing filter of counter-infiltration will be according to the setting-up time fully automatic operation.

The filtering accuracy of the preposition automatic backwashing filter of counter-infiltration is 30 μ m.Can design more small-bore filter core as required, the pump of configuration high pressure, super-pressure improves filtering accuracy.

Description of drawings Fig. 1 is the preposition automatic backwashing filter of counter-infiltration

Fig. 2 is the console switch configuration

Fig. 3 is the filter core of design

The specific embodiment generally is installed in ultrafiltration, micro-filtration membrane before the reverse-osmosis membrane element, as preliminary treatment in the reverse osmosis water purification apparatus.The preposition automatic backwashing filter of counter-infiltration is installed in before ultrafiltration, the micro-filtration membrane element, carries out preposition filtration, ensures the water of ultrafiltration, micro-filtration membrane element, reaches into water requirement, does not stop up.

The lake blue algae outburst increases the conventional water water treatment in waterworks difficulty, with the preposition automatic backwashing filter of counter-infiltration, carries out the filtration of high algae water, and the conventional water water treatment in guarantee waterworks is normally carried out.

Before MBR (membrane bioreactor) sewage disposal device, before the sewage disposal film device, the preposition automatic backwashing filter of counter-infiltration is installed, reduce MBR on-line cleaning number of times, prolong film service life.

Claims

1. the preposition automatic backwashing filter of counter-infiltration, it is characterized in that: structure is made up of filter, intake-discharge pipe road, control system; Filter is with the custom-designed filter core standard filter housing of packing into, filtering accuracy 30 μ m; Pvc pipe and magnetic valve constitute water inlet loop and draining loop; The control system is made up of timer and relay, and control magnetic valve and a water pump are by time-interleaved water inlet filtration, the backwash set; Operating system is divided manually and automatic two kinds, after automatic switch is opened, according to the setting-up time fully automatic operation.