ZM9105 School Teaching Equipment Fluid Mechanics Experiment
Equipment Activated Sludge Process
Activated Sludge Sewage Treatment Pilot Plant 1. General
The activated sludge pilot allows the study and the comprehension
of sewage treatment by activated sludge.
This treatment is an intermediate stage between the physical
treatments or
gridiron, defoliation and primary sedimentation
And the final sterilization and chlorination stage, in a sewage
treatment
station. Its purpose is to eliminate the contaminated
Organic substances which are present in the sewage water after the
above
mentioned physical treatment.
The organic load is measured in BOD (Biological Oxygen Demand) unit
and it also causes a partial elimination of COD
(Chemical Oxygen Demand). The conditioning process takes place in a
tank where the organic load is removed by microorganism (bacteria,
rotifera, vorticellae, etc.) which are cultivated under aerobic
conditions by blowing in air or sometimes also pure oxygen. The
micro-organisms utilize the contaminated substances as necessary
food for their production and their preservation. The aspect for
this mass of micro-organisms is that
of sludge, from which we have taken the name of the
Process. After the pollutant elimination phase it is necessary to
divide the
clarified water from the sludge, operation which is
Carried out in the settling tank (stating separator).
The clarified water flows down to the receiving body, or to a
sterilization
treatment, while the activated sludge is partially
recycled within the oxidation tank in order to stabilize the
elimination
treatment.
This pilot plant has been designed to enable the students to learn
all the fluid-dynamic, chemical-physical problems arising from the
realization of an activated sludge process.
The unit is completely instrumented and arranged for the execution
of tests that help to understand advanced problems
which come from the modern conception of activated sludge plants
such as:
1 the agitation effect in the reaction tank;
the energetic saving and the reliability of the sludge
recirculating system by “air-lift
the effect of the work oxygen concentration on the sludge
elimination and sedimentation.
2. Composition
The pilot plant is composed of:
1 Basic plant (Code 944500)
6-place BOD (Biological Oxygen Demand) meter (Code 994510);
OPTIONAL
1 Frigothermostat for BOD apparatus (Code 949104); OPTIONAL
Thermo reactor for COD analysis (Code 949103); OPTIONAL
1 Electric compressor with 24 1 tank (Code 971227); OPTIONAL 1
OPTIONAL Automatic Data Acquisition System SAD/IC130D composed of:
3. Description Air line
It is composed of:
□a pressure stabilizing reducer;
1 two flow rate controllers: one for the oxidation tank and the
other for the sludge recirculation;
□a set of service solenoid valves
1 an air distributor/diffuser in the reactor
an “air-lift” system for the sludge recirculation from the settling
tank. The circuit can be supplied either by means of a compressor,
or by an oxygen cylinder.
Liquid line This consists of :
a feed preparation tank with stirrer;
1 a volumetric feed pump to study dilution D (Q/V) influence;
1 a cylindrical plexiglass reactor to allow the contact among the
three phases: gas/liquid/solid;
1 a plexiglass settling tank with “air-lift”.
Control and regulation systems
The activated sludge pilot plant IC130D provides:
1 control of the concentration of O2 dissolved in to the oxidation
tank by a sensitive element 1 measurer/indicator of O2;
regulator/actuator acting on the air flow sent to the tank;
control to the feed mixture temperature;
1 control of the sludge quantity in the oxidation tank by sludge
recirculation driven by a timer;
1 luminous mimic panel to follow the process in real time.
Measuring instruments
The pilot plant is provided with instruments to measure the
quantities indicated below:I air flow rates sent to the oxidation
tank and to the settling tank
sewage feed flow rate and temperature;
I pH in the reaction tank;
Quantity of dissolved O2.
Besides, by simple operations it is possible to measure the
recycled sludge quantity and the purged sludge Quantity.
The following equipment is also provided with the unit:
a cone to determine the percentage of sludge preset;
I a set of chemical products to recreate a favourable
environment for bacterial cultures;
a quantity of lyophilized bacteria;
I nitrate percentage detection papers;
pH detection papers
4.Range of experiments
□Determination of the purification effect according to the feed
hydraulic stay time in the oxidation tank.
□Determination of the purification effect according to the mixing.
□Evaluation of the effect at different concentrations of dissolved
O2.
I Determination of the sludge sedimentation varying the
concentration of work 02.
I Influence of sludge age.
□Influence of pH.
□Efficiency of the purification according to the temperature.
I Influence of the activated carbon on the purification process.
□Tests using O2 instead of air.
5.Required services
□Electrical supply: 220V - 50/60 Hz - 3 kW I Compressed air supply:
800 l/h - 6 bar
I Water supply: 200 l/h - 2 bar.
6.Dimensions and weights
□ Dimensions: with feed tank 2450 X 700 X 1700 h mm I Net weight:
270 Kg
Pilot plant components
With reference to figure 1 the activated sludge sewage treatment
plant IC130D consist of:
1.- feed tank with capacity 150 l
2.- fixed speed stirrer - 100 RPM, 90 W
3.- low level indicator
4.- feed cut-off valve
5.- feed discharge valve
6.- feed filter
7.- metering pump - capacity 0-20 l/h
8.- 1.5 l damper
9.- breather valve
10.- feed flow meter 60 l/h f.s.
11.- fowmeter activation valve
12.- fowmeter washing valve
13.- by-pass valve
14.- flowmeter washing
15.- flowmeter activation valve
16.- feed flowrate transducer (*)
17.- digital totalizer (*)
18.- 2000 W feed heater
19.- oxidation reaction tank - capacity approx 35 l
20.- 200 W variable speed stirrer
21.- pH measuring device
22.- reactor discharge valve
23.- digital temperature indicator-regulator
24.- digital dissolved oxygen indicator-regulator
25.- oxygenation flow meter 500 l/h f.s.
26.- oxygenation valve
27.- “air-lift” valve
28.- “air-lift” flow meter 500 l/h f.s.
29.- “air-lift” digital timer
30.- air/oxygen pressure reducer
31.- deactivated sludge discharge valve
32.- digital timer for deactivated sludge discharge
33.- sludge recovery with “air-lift”
34.- reactor discharge
35.- settling tank
36.- deactivated sludge collection tank
37.- clarified water discharge
38.- some computerized version components
39.- console and electric panel
Product Details and Warranty
We supply suitable spare pats according to experiment requirement,
our products take aluminum structure, A4 paper dimension aluminum
and plastic hanging box structure.
We supply 3 years warranty time.
Packaging & Delivery
Package details: plastic film+ plastic foam + plywood box with
pallet, and for equipment dimension less than 1CBM, we supply
plastic film+ plastic foam+ fine carton.
Arrange delivery within 45 days upon receipt of payment.
Please see below photo for detailed package.
Training Room Photo
Company Information
We supply professional educational training equipment and technical
teaching equipment, which has been widely applied in Engineering
Universities, Polytechnics, Technical Institute, Vocational Schools
as well as Industry workforce Development Programs and Training
Center. Our products allow students to learn and experiment through
valuable hands-on experience, and the technology covered by our
training equipment provides knowledge, experiments and didactic
skills development that are of critical importance to today´s and
tomorrow´s careers.
Photo for Clients Visiting Factory
Service
We supply supply7*24 hours service, customer design service, OEM
service, buyer label service. With professional engineers team and
sales team, we assure you good product quality.
Certificate
Our products takes ISO9001 product management system.
| No. | Feature Name | Details |
| 1 | Customer design | Yes |
| 2 | Warranty | 1 year, 2 years, 3 years or 5 years according to client
requirements |
| 3 | Package | Plastic film+ carton+ Fine plywood |
| 4 | Products standard | International didactic equipment standard |
| 5 | Application range | Educational equipment for university, college, vocational training
centers |
| 6 | Company philosophy | Supply best quality Chinese products to the worldwide schools. |
| 7 | Self owned brand | Shouldshine, SSEDU, JSS. |
| 8 | Production time | From 10 days to 60 days according to different items |
