Process Diagram

Band 7+: the diagram show the process of water treatment, Summarise the information by selecting and reporting the main features

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Image for topic: the diagram show the process of water treatment, Summarise the information by selecting and reporting the main features

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The image depicts the water treatment process beginning at 1: Intake Screens, followed by 2: Pumps directing water towards 3: Flash Mix using polyaluminum chloride and added coagulants, progressing to 4: Flocculation where suspended particles aggregate, then moving to 5: Settling Basin where particles settle, continuing to 6: Chlorine addition to ensure disinfection, passing through 7: Filter Membrane for further purification, encountering 8: Disinfection employing chlorine, lime as sodium hydroxide, and fluoride, moved by 9: Pump to reach 10: Faucet, completing the water treatment process.

Given the complexity of the image, the above description may not be entirely accurate.

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The diagram explains the way in which water is treated.

Overall, the process consists of 10 stages, starting with the intake screens and ending up with the faucet. It also includes some steps such as pumps, flocculations, settling basin, filter membrane and other.

First of all, water comes from the special tank through the intake screens to remove rubbish and fish from entering the treatment. Then, water gets through the pumps and enter the flash mix zone. Here, polyaluminum chloride and oxidants are added into the water. After that, water goes to flocculations step and then to the settling basin. Here some heavy parts settle at the bottom, chlorine then is added to the water. After this stage, water goes down by the tube and enters the filter membrane box, where small particles are removed. Later it proceeds to the disinfection tank.Some materials, like chlorine, fluoride, lime or sodium hydroxide are added. Penultimate stage is a pump, after it the water is delivered to a faucet.

Word Count: 166

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Overall Band Score

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Vocabulary Complexity:
B2 - Upper Intermediate
Opt for even more advanced words when appropriate.

Grammar Mistakes: N/A

Vocabulary Repetition:

water: 8

added: 3

after: 3

Try using synonyms for the above words

Task Response

The report provides a clear and accurate overview of the water treatment process, covering all the main stages from intake to faucet. The sequence of steps is logically presented, and the use of cohesive devices makes the process easy to follow. There are minor inaccuracies (e.g., 'oxidants' instead of 'coagulants', 'special tank' not mentioned in the diagram) and a few grammatical slips (e.g., 'enter' instead of 'enters', 'flocculations' as a countable noun), but these do not hinder understanding. To improve, ensure precise terminology and consistent grammatical accuracy. Overall, the response effectively addresses the task requirements.

Coherence & Cohesion

The report is logically organized with a clear introduction, overview, and sequential description of the process. Cohesive devices such as 'First of all', 'Then', 'After that', and 'Later' are used effectively to guide the reader. However, there are minor lapses: the overview mentions 'flocculations' and 'other' without specifying, and the final sentence could be better connected. Paragraphing is adequate but could be improved by separating the overview and the detailed steps more clearly. To enhance coherence, ensure each paragraph focuses on a distinct stage or group of stages, and use a wider range of linking words.

Lexical Resource

The vocabulary used is appropriate for the task, with terms like 'intake screens', 'flocculations', 'settling basin', 'filter membrane', and 'disinfection'. However, there is some repetition (e.g., 'water' appears frequently) and minor inaccuracies in word choice (e.g., 'flocculations' should be 'flocculation', 'enter' should be 'enters'). The range of vocabulary is sufficient but not highly sophisticated. To improve, incorporate more varied synonyms and precise technical terms, and ensure correct word forms.

Grammatical Range & Accuracy

The report uses a mix of simple and complex sentence structures, but there are noticeable grammatical errors that affect clarity. For example, subject-verb agreement issues ('water gets through the pumps and enter'), incorrect pluralization ('flocculations'), and missing articles ('to a faucet' is correct, but 'to faucet' would be wrong). Punctuation is generally correct, but there are run-on sentences and missing spaces after periods. To improve, proofread for basic errors and vary sentence structures more effectively.

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