CN2633872Y

CN2633872Y - ICAST treatment self control and monitoring device for waste water reutilizing in small community

Info

Publication number: CN2633872Y
Application number: CN 03210007
Authority: CN
Inventors: 张道方; 史雪霏; 陆晓千; 纪桂霞; 胡寿根
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2003-08-25
Filing date: 2003-08-25
Publication date: 2004-08-18
Anticipated expiration: 2013-08-25

Abstract

The utility model relates to an ICAST treatment self control and monitoring device for waste water reutilizing in small community, which is provided with a facultative zone in front of an aerobic zone on the basis of traditional SBR. During operation, through connecting an electromagnetic flowmeter, a water level relay, a solenoid valve and a controller with a computer, operation parameter of each process stage can be automatically established according to quality and volume of feed-water and DO value inside ICAST reaction pool, thereby guaranteeing that quality index of outflow water accords with the recycle standards of reclaimed water and realizing automation of waste water recycling treatment and water quality monitoring. The utility model adopts the following process flow: raw water enters into the ICAST reaction pool through a regulating pool for biochemical treatment and the ICAST reaction pool can adopt intermittent or continuous operation mode; during continuous operation, both pools are of combined use and outflow water treated by the ICAST reaction pool flows into a micro-filtration pool for filtering through an intermediate pool; and then, filtered outflow water is added with disinfectant to be conveyed to a disinfecting pool, and quality of outflow water can reach recycling standard of reclaimed water after settling a period of time inside the disinfecting pool. The utility model can be used for water body landscape, greening irrigation, car washing and street cleaning etc.

Description

The ICAST of community wastewater reuse handles automatic control and monitoring device

Technical field

The utility model relates to a kind of community wastewater the ICAST processing automatic control and the monitoring device of reuse on the spot, belongs to environmental engineering water technology and water resources recycle utilization field.

Background technology

Water pollutes and water resources crisis is the important factor that the current urban cells of restriction China is built Sustainable development, therefore needs a fairly perfect economical and efficient sewage water recycling and processing equipment, really realizes sewage resource utilization and innoxious on the spot.External economically developed city just takes up to set up and promotes " water and cyclically utilizing system the community life sewage processing extremely " from the eighties in 20th century, water is back to pouring greening, water system view, cleaning roads, cleaning automobile and flushing lavatory etc. promptly, walks the road of Sustainable development.The reusing sewage treatment technology, research both at home and abroad mainly concentrates on activated sludge process, biomembrance process and chemical enhanced one-level processing etc.Sequencing batch active sludge (SBR) also claim intermittent activated sludge process, its used device is a biochemistry pool, function is by aeration, precipitation, draining, idle five stages in this pond, realize effective removal of pollutent, operation scheme is the intermittent operation mode, be intermittent water inflow, intermittently water outlet, effluent quality is generally near emission standard.SBR treatment unit intensification degree height, initial investment are few, processing power is strong in the operational process, the dephosphorization efficiencies of nitrogen removal is good, anti impulsion load can prevent that again sludge bulking, operation scheme from can control and monitor advantages such as water quality, working cost are low flexibly automatically.But because it has certain limitation in practical engineering application, for adapting to the needs of actual engineering, the various new forms of having derived gradually.More representationally having 1) ICEAS (Intermittent Cycle Extend Aeration System/ intermittent cyclic extended aeration system) is to rise in Australia early 1980s, is the SBR technology of distortion.Its used device is compared with the device of SBR method, maximum characteristics are exactly that feed-water end at reactor has increased a pre-reaction zone, immediate shipment is changed to a pre-reaction zone pond and a biochemistry pool, its volume is basic identical, operation scheme is water inlet continuously (precipitation phase, drainage period be water inlet continuously still), intermittent drainage does not have tangible step of reaction and idle stage.Though this technique device is many pre-reaction zone pond, effluent quality generally relatively is better than emission standard.2) CAST/CASS/CASP (Cyclic Activated Sludge Technology/Cyclic Activated SludgeSystem/Cyclic Activated Sludge Process) (circulating active sludge technology/circulating active sludge system/circulating active sludge technology), adopt the device of CAST/CASS/CASP method to begin to obtain research and application in the seventies, compare with the ICEAS equipment therefor, the pre-reaction zone volume is less, and become biological selector, device is a pre-reaction zone pond, pond, an oxygen-starved area, an aerobic zone pond, its volumetric ratio was generally 1: 5: 30, its precipitate phase is not intake on the operation scheme, and the stability of draining is protected.Though this technique device has three ponds, effluent quality general near but water water quality standard in not reaching.Above-mentioned SBR and deutero-community wastewater recycling and processing equipment thereof because its uniqueness is specially adapted to the community life sewage Treatment for Reuse, are extensively used by many external economically developed cities.China has also carried out some researchs and demonstration to it over nearly 3 years, but in view of its regulate and control operation parameter select, control automatically and each system such as monitoring, maintenance management between the integrated aspect of optimization problem, cause and once drop into too high and management inconvenience, cause and normally to move.

Summary of the invention

The purpose of this utility model be for overcome problem and regulate and control operation parameter that existing SBR and deutero-community wastewater recycling and processing equipment thereof exist select, control automatically and each system such as monitoring, maintenance management between the optimization problem of integrated aspect, provide a kind of ICAST of community wastewater reuse to handle automatic control and monitoring device.

The technical solution of the utility model is based on a kind of ICAST treatment process of community wastewater reuse, characteristics are to carry out biochemical treatment for former water enters the ICAST reaction tank of being made up of aerobic area of the preceding increase of SBR biochemistry pool (aerobic zone) through the pre-treatment equalizing tank, more after filtration behind the sterilization pool in the water reuse; The ICAST reaction tank can select to adopt intermittent type or succession running.ICAST biochemistry pool operation scheme is: periodic running: intermittent water inflow, intermittently water outlet, sewage is sent into the ICAST biochemistry pool by water pump in the equalizing tank, by water inlet magnetic flow meter dominant discharge, the sewage that flows into the ICAST reaction tank carries out aerobic decomposition at aerobic area and the laggard aeration zone of becoming owner of of active sludge thorough mixing, after pollutants in sewage is fully degraded, stop aeration, and precipitated outlet water is to middle pond; Succession running: continuous water inlet, continuous effluent, sewage is sent into the ICAST reaction tank by water pump in the equalizing tank, by water inlet magnetic flow meter dominant discharge, the sewage that flows into the ICAST reaction tank carries out aerobic decomposition at aerobic area and the laggard aeration zone of becoming owner of of active sludge thorough mixing, naturally second pond is gone in the back overflow that stays for some time, the overflow of precipitation supernatant liquor is to middle pond, and the part mud in the main aeration zone of refluxing in the treating processes is to aerobic area.According to above-mentioned ICAST treatment process, the technical solution of the utility model is: the ICAST of community wastewater reuse handles automatic control and monitoring device comprises equalizing tank, ICAST pond, middle pond, second pond, micro-filtration pond, sterilization pool, intake pump, magnetic flow meter, air compressor machine, reducing valve, air inlet magnetic valve, spinner-type flowmeter, micropore aeration pipe, drain solenoid valve, sludge reflux pump, manually-operated gate, filtration pump, dosing pump, level relay, PLC controller, computer, COD _CrOn-line monitoring instrument, NH ₃-N on-line monitoring instrument, turbidity on-line monitor, DO on-line monitoring instrument, pH on-line monitoring instrument, printer; Equalizing tank links to each other with the ICAST pond by intake pump, pipeline, magnetic flow meter, provide the loop of air to be made up of by pipeline, air magnetic valve, spinner-type flowmeter, micropore aeration pipe after the reducing valve decompression air compressor machine to the ICAST pond, the aerobic zone in the ICAST reaction tank is connected with aerobic area with sludge reflux pump by pipeline; The ICAST pond is connected with middle pond by pipeline, drain solenoid valve, links to each other with second pond by manually-operated gate, and second pond is connected with middle pond by pipeline, and middle pond is connected with the micro-filtration pond by pipeline through filter pump, is connected to dosing pump and sterilization pool behind the micro-filtration pond.

Effect of the present utility model is:

1, because ICAST is based on the SBR treatment technology, equipment therefor is to increase an aerobic area before aerobic zone, but the fluctuation of efficient buffer influent quality and is played the biological effect of selecting to the impact of aerobic zone active sludge, suppress the thread fungus growth, control sludge bulking; In the operational process, preposition aerobic area can alleviate the organic loading of aerobic zone part, makes the more effective removal of residual organic matter; Adopt flexible operation modes simultaneously, can freely select the operation scheme of intermittent type or continous way according to the actual needs.Wherein during periodic running, apparatus integration degree height can be saved capital cost; The mud return-flow system of setting up during succession running can guarantee to obtain the ideal treatment effect in the relatively short residence time, need not additional carbon and also can make backflow mixed liquor NH ₃-N utilizes the carbon source denitrification in the former water in aerobic area, improve denitrification effect, and treatment capacity is bigger.

2, this device can be according to DO value in influent quality, the water yield and the ICAST biochemical reaction tank, the operating parameter of each operation stage of automatic setting, make effluent quality reach middle water reuse standard (CJ/T95-2000), can be back to intermediate water reuse system, as water landscape, pouring greening, give the car a wash and cleaning roads etc., and realize the community wastewater automatization of Treatment for Reuse on the spot.

3, whole recycling and processing equipment intensification degree height, safe and reliable to operation, easy to maintenance has

4, powerful fault alarm and fault handling function, operation also has data gathering, processing, form and printing function except that containing the execute-in-place function.Robot control system(RCS) is practical and economical, and the automatic operation of major equipment is all considered in design and programming, compare with the normal procedure intelligent direct digital controller, and less investment, the life-span is long, and easy care and failure rate are low, can save once investment.

Description of drawings

Fig. 1 is that the ICAST of community wastewater reuse handles automatic control and monitoring device;

Fig. 2 is automatic controlled function synoptic diagram;

Fig. 3 is an ICAST intermittent operation mode floor map;

Fig. 4 is an ICAST continuously-running duty floor map.

Embodiment

The technical solution of the utility model is based on a kind of ICAST treatment process of community wastewater reuse, by shown in Figure 1, the characteristics of its technical process are to carry out biochemical treatment for former water enters the ICAST reaction tank of being made up of aerobic area of the preceding increase of SBR biochemistry pool (aerobic zone) 2 through pre-treatment equalizing tank 1, water reuse in sterilization pool 6 back after filtration again, effluent quality after the sterilization reaches middle water reuse standard, and the ICAST reaction tank can select to adopt intermittent type or succession running.ICAST biochemistry pool operation scheme is: periodic running: by Fig. 1, shown in Figure 3, intermittent water inflow, intermittently water outlet, sewage is sent into ICAST biochemistry pool 2 by intake pump 7 in the equalizing tank 1, by water inlet magnetic flow meter 8 dominant discharge, the sewage that flows into the ICAST reaction tank carries out aerobic decomposition at aerobic area and the laggard aeration zone of becoming owner of of active sludge thorough mixing, after pollutants in sewage is fully degraded, stop aeration, and precipitated outlet water is to middle pond 3; Succession running: by Fig. 1, shown in Figure 4, continuous water inlet, continuous effluent, sewage is sent into ICAST reaction tank 2 by intake pump 7 in the equalizing tank 1, by water inlet magnetic flow meter 8 dominant discharge, the sewage that flows into ICAST reaction tank 2 carries out aerobic decomposition at aerobic area and the laggard aeration zone of becoming owner of of active sludge thorough mixing, naturally second pond 4 is gone in the back overflow that stays for some time, and the overflow of precipitation supernatant liquor is to middle pond 3, and the part mud in the main aeration zone of refluxing in the treating processes is to aerobic area.

Be the ICAST treatment process that realizes the community wastewater reuse required automatic control and monitoring assembling device, by Fig. 1, shown in Figure 2, it comprises equalizing tank 1, ICAST pond 2, middle pond 3, second pond 4, micro-filtration pond 5, sterilization pool 6, intake pump 7, magnetic flow meter 8, air compressor machine 9, reducing valve 10, air inlet magnetic valve 11, spinner-type flowmeter 12, micropore aeration pipe 13, drain solenoid valve 14, sludge reflux pump 15, manually-operated gate 16, filtration pump 17, dosing pump 18, level relay 19, PLC controller 20, computer 21, COD _CrOn-line monitoring instrument 22, NH ₃-N on-line monitoring instrument 23, turbidity on-line monitor 24, DO on-line monitoring instrument 25, pH on-line monitoring instrument 26, printer 27; Equalizing tank 1 links to each other with ICAST pond 2 by intake pump 7, pipeline, magnetic flow meter 8, provide the loop of air to be made up of air compressor machine 9, reducing valve 10, pipeline, air magnetic valve 11, spinner-type flowmeter 12, micropore aeration pipe 13 to the ICAST pond, the aerobic zone in the ICAST reaction tank 2 is connected with aerobic area with sludge reflux pump 15 by pipeline; The ICAST pond is connected with middle pond 3 by pipeline, drain solenoid valve 14, link to each other with second pond 4 by manually-operated gate 16, second pond 4 is connected with middle pond 3 by pipeline, and middle pond 3 is connected with micro-filtration pond 5 by pipeline through filter pump 17, is connected to dosing pump 18 and sterilization pool 6 behind the micro-filtration pond 5.Be provided with the fountain landscape system of reuse water in addition in addition.

ICAST is used for the community wastewater process for reclaiming and automatic control can connect with computer 21 by magnetic flow meter 8, level relay 19,

magnetic valve

11,14, PLC controller 20 etc. with monitoring device, records the Inlet and outlet water water-quality COD according to on-

line detector

22,23,24,25,26 _Cr, NH ₃-N, turbidity value and magnetic flow meter 8 record DO, pH value in feed water flow value and the ICAST reaction tank 2, the operating parameter of each operation stage of automatic setting, data can be by printer 27 outputs in the computer, guarantee that the effluent quality index meets middle water reuse standard, realizes the automatization of reusing sewage processing operation and water quality monitoring (WQM).Concrete working process is:

(1) opens computer 21, enter automatic control and detect the interface, select ICAST treatment process operation scheme (intermittent type or continous way), and input password and relevant original start value, as intake pump 7 intermittently start times, aeration time, sedimentation time, water discharge valve start-up time delay etc.Bring into operation implementation procedure control automatization.

(2) sanitary sewage is transported to equalizing tank 1 through lift pump from pump well, according to the time of the control of the liquid level signal in equalizing tank start-stop pump, turn on pump during the equalizing tank low level, termination of pumping when high-order.

(3) water outlet after equalizing tank 1 precipitation process, be transported to ICAST reaction tank 2 by intake pump, intake pump 7 is together controlled according to the liquid level signal and the equipment running status of equalizing tank 1 and ICAST reaction tank 2, termination of pumping when turn on pump when ICAST reaction tank 2 low levels and equalizing tank 1 are high-order, ICAST reaction tank 2 high positions or equalizing tank 1 low level, turn on pump not then during ICAST reaction tank 2 is in aeration, precipitation, water outlet.In ICAST reaction tank 2 aeration process: (a) operation of air compressor machine 9 is different according to the intermittent type or the continous way of treatment scheme, delayed startup air compressor machine when if intake pump 7 moves in the periodic running, and after intake pump 7 closes, air compressor machine 9 continues to stop after operation for some time, if air compressor machine 9 links with intake pump 7 in the succession running; (b) 2 air inlet magnetic valves 11 link with air compressor machine 9; (c) sludge reflux pump 15 does not move in the periodic running, sludge reflux pump 15 and intake pump 7 interlocks in the succession running; (d) 3 drain solenoid valves 14 Time Delay Opening successively in the periodic running, 2 drainings of ICAST reaction tank are closed all drain solenoid valves during to low level, and drain solenoid valve is uncontrolled in the succession running.

(4) water outlet after intermittent type ICAST handles, by pond 3 in the middle of flowing to certainly, water outlet is then removed fine particle from flowing to second pond 4 after continous way ICAST handles, and overflow is to middle pond 3 again.Retaining is delivered to micro-filtration pond 5 by filtration pump 17 and filters in the middle pond, filters the back water outlet and adds sterilizing agent and deliver to the sterilization pool 6 back effluent quality that stays for some time and reach middle water reuse standard.Wherein filtration pump 17 is according to the control of middle pond 3 water levels, high-order turn on pump, low level termination of pumping; Dosing pump 18 and filtration pump interlock.

Automatic control of the present utility model and monitoring device have following function:

(1) process flow sheet dynamically shows

Can show total technological process, water inlet portion flow process, biochemical treatment part flow process, middle pond and second pond treating part flow process, filtration and dosing sterilization section flow process.When showing above-mentioned flow process, can dynamically show each treating pond and pipeline current working state, use sound and light alarm during equipment failure, and can suitably handle.

(2) monitor in real time and show relevant data

Analog module by expansion can import corresponding instrumented data into computer, realizes monitoring in real time on computers and shows relevant data, comprises the flow of water into, the COD of Inlet and outlet water _Cr, NH ₃DO value in the turbidity value of-N value, water outlet and the ICAST reaction tank and pH value.

(3) device control and parameter setting

Can under the state of control automatically, control the switch of certain equipment by force, carry out the setting of multiple parameter, as air compressor machine time-delay stand-by time, alarming value, drain solenoid valve start-up time delay etc. according to the requirement of handling.Simultaneously, can adjust operating parameter automatically according to the value of feedback of on-line instrument, as aeration time, sedimentation time etc. in the ICAST reaction tank.

(4) data acquisition inquiry and processing

As requested the data in the treating processes are gathered and preserved, can inquire about the failure record of random time various device and the historical data of instrument, historical trend figure is provided function, automatically generate the trend map in 24 hours, one month, 1 year, provide the data sheet function simultaneously, the class's of generation form and daily sheet.

Adopt method and apparatus of the present utility model effluent quality after treatment can reach middle water reuse standard as shown in table 1.

The main water quality standard of the national regeneration water of table 1

CJ/T 95-2000	BOD ₅(mg/L)	COD _cr (mg/L)	NH ₃-N (in N) (mg/L)	Turbidity (degree)	Stink
	BOD ₅(mg/L)	COD _cr (mg/L)	NH ₃-N (in N) (mg/L)	Turbidity (degree)	Stink	10	50	20	10	No unplessantness displeasure
	Ss suspended solid (mg/L)	Colourity (degree)	Soluble solid (mg/L)	LAS (mg/L	pH	10	50	20	10	No unplessantness displeasure
	Ss suspended solid (mg/L)	Colourity (degree)	Soluble solid (mg/L)	LAS (mg/L	pH	10	30	1200	≤2	6.5～9

The middle water of water reuse standard can be back to as water landscape, pouring greening, give the car a wash and cleaning roads etc. in reaching, and the utility model adopts a fountain view pond.

Claims

1, a kind of ICAST of community wastewater reuse handles automatic control and monitoring assembling device, it is characterized in that it comprises equalizing tank (1), ICAST pond (2), middle pond (3), second pond (4), micro-filtration pond (5), sterilization pool (6), intake pump (7), magnetic flow meter (8), air compressor machine (9), reducing valve (10), air inlet magnetic valve (11), spinner-type flowmeter (12), micropore aeration pipe (13), drain solenoid valve (14), sludge reflux pump (15), manually-operated gate (16), filtration pump (17), dosing pump (18), level relay (19), PLC controller (20), computer (21), COD _CrOn-line monitoring instrument (22), NH ₃-N on-line monitoring instrument (23), turbidity on-line monitor (24), DO on-line monitoring instrument (25), pH on-line monitoring instrument (26), printer (27); Equalizing tank (1) links to each other with ICAST pond (2) by intake pump (7), pipeline, magnetic flow meter (8), provide the loop of air to be made up of air compressor machine (9), reducing valve (10), pipeline, air magnetic valve (11), spinner-type flowmeter (12), micropore aeration pipe (13) to the ICAST pond, the aerobic zone in the ICAST reaction tank (2) is connected with aerobic area with sludge reflux pump (15) by pipeline; The ICAST pond is connected with middle pond (3) by pipeline, drain solenoid valve (14), link to each other with second pond (4) by manually-operated gate (16), second pond (4) is connected with middle pond (3) by pipeline, middle pond (3) is connected with micro-filtration pond (5) by pipeline through filter pump (17), is connected to dosing pump (18) and sterilization pool (6) after micro-filtration pond (5).