CN2485657Y

CN2485657Y - Automatic inspector for amonia and nitrogen contents in sewage

Info

Publication number: CN2485657Y
Application number: CN 01237995
Authority: CN
Inventors: 刘秀宁; 周仲歧; 史承祯; 俞茂良; 丁则仁; 薛军
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-05-28
Filing date: 2001-05-28
Publication date: 2002-04-10
Anticipated expiration: 2011-05-28

Abstract

The utility model discloses an automatic inspector for ammonia and nitrogen content in sewage, comprising a micro-computer control part, a sampling part, a disposal part, a distillation and absorbing part and a titration part. The micro-computer controls a sampling pump, an air compressor and each pipeline gas and liquid valve. All inspection steps of the utility model including sampling, amount fixing, adding special regent, distilling, adsorbing, titrating until exporting the testing value are automatically completed online. The analysis method adopted is in accord with the national standard GB 7478. Testing data is accurate and reliable. With the capacity to reduce the working load of the workers and shorten the period of the analysis testing, the utility model is suitable for the on-line continuous monitoring of the ammonia and nitrogen contents in the industrial sewage, and is helpful for pollution controlling and environment protection.

Description

The sewage ammonia nitrogen automatic tester

The utility model relates to a kind of water quality detection instrument, and is particularly a kind of by micro-processor controlled sewage ammonia nitrogen automatic tester.

At present, the laboratory of sewage ammonia nitrogen index is detected, and national regulation has four kinds of methods: 1, GB7478 distillation and titrimetry, 2, GB7479 nessler reagent colourimetry, 3, GB7481 salicylic acid spectrophotometric method, 4, ammonia gas-sensing electrode method (trying).Above method all belongs to the manual analysis method, the step complexity, and workload is big, and consistance is good inadequately as a result, can't the online in real time analysis.2nd, 3 two kinds of method sensing ranges are narrow, and range is low, are difficult to satisfy high-concentration industrial sewage and detect needs.The 4th kind of method needs reasons such as often replacing, electrode contamination resistance difference because of its semi-permeable diaphragm, domestic still being difficult to used.According to the knowledge of the applicant, still there is not the ammonia nitrogen automatic on-line detecting instrument scene of being applied to, that use first kind of detection method at present.

The purpose of this utility model is, overcomes the shortcoming of manual analysis, and a kind of sewage ammonia nitrogen automatic tester that uses distillation and titration method, detected ammonia nitrogen by the system controlled by computer on-line continuous automatically is provided.

The purpose of this utility model is achieved through the following technical solutions: a kind of sewage ammonia nitrogen automatic tester, its composition comprises the microcomputerized control part, by cucurbit, well heater, the distillation absorption portion that refrigeratory and absorption bottle constitute, the titration part that constitutes by automatic buret and stirrer, the stirrer of stirrer is loaded in the absorption bottle, buret is connected by liquid pipe and cross-over valve with absorption bottle, it is characterized in that also having (1), by sampling pump, filtrator, sampling valve, the sampling section that is connected successively with pipeline that sampling jar and charging valve constitute, its charging valve drain pipe inserts the cucurbit of distillation absorption portion, (2), by air compressor machine, the air inlet cross-over valve, gas-distribution pipe, the discharge opeing bottle, tapping valve, charging valve, the processing section that lift valve and volumetric bottle and liquid holding bottle combo constitute, gas-distribution pipe wherein, air compressor machine, the air inlet cross-over valve, the discharge opeing bottle, tapping valve connects successively with pipeline, the normal open end of air inlet cross-over valve communicates with atmosphere, volumetric bottle is connected with the sampling jar of sampling section and the liquid holding bottle of combo thereof respectively by pipeline, volumetric bottle and liquid holding bottle combo are by pipeline and charging valve, lift valve is in parallel with gas-distribution pipe, and the discharge opeing bottle is connected with the absorption bottle of distillation absorption portion by pipeline and absorption bottle tapping valve.

The utility model deft design, uniqueness; by system controlled by computer sampling pump, air compressor machine and each pipeline gas, liquid valve; from sampling, quantitatively, add special agent, distillation, condensation, absorption, titration and realize online continuous and automatic until the whole testing process of output detected value; the analytical approach that adopts meets standard GB 7478; detect data accurately and reliably; alleviate personnel's workload; shortened the analyzing and testing cycle; be applicable to the monitoring of industrial sewage ammonia nitrogen on-line continuous, help control pollution and protection environment.

With reference to the accompanying drawings and in conjunction with the embodiments the utility model is described in detail.

Fig. 1 is the utility model one-piece construction synoptic diagram.

As shown in Figure 1, the composition of the utility model sewage ammonia nitrogen automatic tester comprises microcomputerized control part (not drawing among the figure); The distillation absorption portion that constitutes by cucurbit B4, heater H, refrigeratory L and absorption bottle B5; By the titration part that automatic buret D and stirrer M2 constitute, the stirrer M21 of stirrer is loaded in the absorption bottle B5, and buret D is connected by pipeline 1 and cross-over valve Y8 with absorption bottle B5; By the sampling section that is connected successively with pipeline 1 that sampling pump M1 filter F, sampling valve Y2, sampling jar B1 and charging valve Y5 constitute, the drain pipe of its charging valve Y5 inserts cucurbit B4; By air compressor machine P, air inlet cross-over valve Y1, gas-distribution pipe T, discharge opeing bottle B0, tapping valve Y0, charging valve Y6, the processing section that lift valve Y7 and volumetric bottle B2 and liquid holding bottle B3 combo constitute, gas-distribution pipe T wherein, air compressor machine P, air inlet cross-over valve Y1, discharge opeing bottle B0, tapping valve Y0 connects successively with pipeline, the normal open end of air inlet cross-over valve Y1 communicates with atmosphere, volumetric bottle B2 is connected with the liquid holding bottle B3 of sampling jar B1 and combo thereof respectively by pipeline, volumetric bottle B2 and liquid holding bottle B3 combo are by pipeline and charging valve Y6, lift valve Y7 is in parallel with gas-distribution pipe T, and discharge opeing bottle B0 is connected with absorption bottle B5 by pipeline and absorption bottle tapping valve Y3.2 is former tank among the figure, and Y4 is the tapping valve of cucurbit B4, and M3 is the syringe pump of buret D.Among the embodiment, volumetric bottle B2 and liquid holding bottle B3 combo can have many groups.

For the utility model is more suitable in industry spot, further feature is: as shown in Figure 1, (1), sampling jar B1 have the neck of contraction, and the stopple coupon port is positioned at this bottleneck, and sampling jar is built-in with water level switch K, are beneficial to the accurate quantification sampling; (2), has the automatic liquid supply device that constitutes by high-level container BX and fluid infusion controller Q, the fluid infusion controller comprises main body and split, main body is built-in with big float valve FL, the main body upper end is connected with high-level container, the lower end is connected with liquid holding bottle B3, main body top is communicated with split, and split is built-in with little float valve FS, and the split upper end is communicated with atmosphere, little float valve is often opened, when air compressor machine P and lift valve Y7 work, gaseous tension makes the solution in the liquid holding bottle B3 promote to volumetric bottle B2, and the interior liquid level of the controller of fluid infusion simultaneously rises little float valve FS is closed, keep internal pressure, after solution elevating was finished, air compressor machine was closed, and liquid level descends in the liquid holding bottle, big float valve FL falls, by high-level container BX fluid infusion in liquid holding bottle B3, big then float valve FL rises to control with liquid level and stops fluid infusion, realizes automatic liquid supply; (3), the air cooler of refrigeratory L for constituting by forced air cooled tube L1, fan L2, condensation water jacket L3, overcome the water-bath condensation difficulty at water source that need flow, and quickened condensation process; (4), has the oxidation-reduction potential detecting electrode G that is inserted on the absorption bottle B5, can judge titration end-point by the rate of change of measuring the distillate oxidation-reduction potential, the automatic gauge titer, cross-over valve Y8 cooperates syringe pump M3 to realize the work of forward titration and reverse imbibition, guarantee the accuracy of measurement, make that again instrument is easy to realize.

Automatic control of the present utility model and data communication are finished by microcomputer and performer thereof, the progress of work of apparatus for automatic control each several part, calculate, show, print, store detected value, and carry out message exchange by the data communication mouth, can form network easily, utilize remote terminal to monitor this instrument.

The concise and to the point workflow of the utility model is as follows: it is quantitative to gather water sample → sample, add the no ammoniacal liquor of cucurbit → promote respectively, special agent, solution → each solution such as boric acid absorption liquid are quantitatively to respective volume → with special agent, no ammoniacal liquor adding cucurbit → absorption liquid boric acid is added absorption bottle → distillation, condensation, absorb test fluid → end distillation, with the distillate in the salt acidometric titration absorption bottle → judgement titration end-point, calculate detected value → demonstration, print, storage detected value → emptying cucurbit, waste liquid in the absorption bottle → cleaning each several part device and pipeline → wait, automatically start next time and detect.

Claims

1, the sewage ammonia nitrogen automatic tester, its composition comprises the microcomputerized control part, by cucurbit, well heater, the distillation absorption portion that refrigeratory and absorption bottle constitute, the titration part that constitutes by automatic buret and stirrer, the stirrer of stirrer is loaded in the absorption bottle, buret is connected by liquid pipe and cross-over valve with absorption bottle, it is characterized in that also having (1), by sampling pump, filtrator, sampling valve, the sampling section that is connected successively with pipeline that sampling jar and charging valve constitute, its charging valve drain pipe inserts the cucurbit of distillation absorption portion, (2), by air compressor machine, the air inlet cross-over valve, gas-distribution pipe, the discharge opeing bottle, tapping valve, charging valve, the processing section that lift valve and volumetric bottle and liquid holding bottle combo constitute, gas-distribution pipe wherein, air compressor machine, the air inlet cross-over valve, the discharge opeing bottle, tapping valve connects successively with pipeline, the normal open end of air inlet cross-over valve communicates with atmosphere, volumetric bottle is connected with the sampling jar of sampling section and the liquid holding bottle of combo thereof respectively by pipeline, volumetric bottle and liquid holding bottle combo are by pipeline and charging valve, lift valve is in parallel with gas-distribution pipe, and the discharge opeing bottle is connected with the absorption bottle of distillation absorption portion by pipeline and absorption bottle tapping valve.

2, sewage ammonia nitrogen automatic tester according to claim 1 is characterized in that sampling jar has the neck of contraction, and the stopple coupon port is positioned at this bottleneck, and sampling jar is built-in with water level switch.

3, sewage ammonia nitrogen automatic tester according to claim 1, it is characterized in that having the automatic liquid supply device that constitutes by high-level container and fluid infusion controller, the fluid infusion controller comprises main body and split, main body is built-in with big float valve, the main body upper end is connected with high-level container, and the lower end is connected with liquid holding bottle, and main body top is communicated with split, split is built-in with little float valve, and the split upper end is communicated with atmosphere.

4, sewage ammonia nitrogen automatic tester according to claim 1 is characterized in that refrigeratory is the air cooler that is made of forced air cooled tube, fan, condensation water jacket.

5, according to each described sewage ammonia nitrogen automatic tester in the claim 1 to 4, it is characterized in that having the oxidation-reduction potential detecting electrode that is inserted on the absorption bottle.